EP2299578A3 - Dc/dc converter having a fast and accurate average current limit - Google Patents

Dc/dc converter having a fast and accurate average current limit Download PDF

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Publication number
EP2299578A3
EP2299578A3 EP10009840A EP10009840A EP2299578A3 EP 2299578 A3 EP2299578 A3 EP 2299578A3 EP 10009840 A EP10009840 A EP 10009840A EP 10009840 A EP10009840 A EP 10009840A EP 2299578 A3 EP2299578 A3 EP 2299578A3
Authority
EP
European Patent Office
Prior art keywords
current limit
converter
pulse width
width modulation
improvement relates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10009840A
Other languages
German (de)
French (fr)
Other versions
EP2299578B1 (en
EP2299578A2 (en
Inventor
Charles Edward Hawkes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linear Technology LLC
Original Assignee
Linear Technology LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linear Technology LLC filed Critical Linear Technology LLC
Priority to EP11000952.9A priority Critical patent/EP2323246B1/en
Priority to EP11000951.1A priority patent/EP2317634B1/en
Publication of EP2299578A2 publication Critical patent/EP2299578A2/en
Publication of EP2299578A3 publication Critical patent/EP2299578A3/en
Application granted granted Critical
Publication of EP2299578B1 publication Critical patent/EP2299578B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

In order to overcome the three main obstacles to obtaining a fast and accurate average current limit in a DC/DC converter, three distinct improvements are provided which can work in concert to achieve the goal. Each of the three parts comprises significant new improvements, and their use together to create an average current limit is also believed to be novel. The first improvement relates to providing a bias signal control configured to apply a variable DC bias signal to the compensation ramp signal generated in the DC/DC converter so that the compensating ramp signal is biased to zero at the end of each ON-time for each cycle so that the peak current limit is independent of the duty cycle of the pulse width modulation signal during current limit conditions. A second improvement relates to modulating the clamp voltage that establishes the peak current limit as a function of ripple of the inductor current for each cycle of the pulse width modulation signal so as to reduce or cancel the effect of the inductor ripple current on the average output current during current limit conditions. The third improvement relates to adjusting the frequency of the pulse width modulation signal during current limit conditions as a function of both the input voltage and the output voltage of the DC/DC converter.
EP10009840.9A 2009-09-17 2010-09-17 Dc/dc converter having a fast and accurate average current limit Active EP2299578B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11000952.9A EP2323246B1 (en) 2009-09-17 2010-09-17 Dc/dc converter having a fast and accurate average current limit
EP11000951.1A EP2317634B1 (en) 2009-09-17 2010-09-17 Dc/dc converter having a fast and accurate average current limit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24322809P 2009-09-17 2009-09-17

Related Child Applications (4)

Application Number Title Priority Date Filing Date
EP11000952.9A Division EP2323246B1 (en) 2009-09-17 2010-09-17 Dc/dc converter having a fast and accurate average current limit
EP11000951.1A Division EP2317634B1 (en) 2009-09-17 2010-09-17 Dc/dc converter having a fast and accurate average current limit
EP11000951.1 Division-Into 2011-02-07
EP11000952.9 Division-Into 2011-02-07

Publications (3)

Publication Number Publication Date
EP2299578A2 EP2299578A2 (en) 2011-03-23
EP2299578A3 true EP2299578A3 (en) 2011-05-04
EP2299578B1 EP2299578B1 (en) 2013-07-31

Family

ID=43086720

Family Applications (3)

Application Number Title Priority Date Filing Date
EP11000952.9A Active EP2323246B1 (en) 2009-09-17 2010-09-17 Dc/dc converter having a fast and accurate average current limit
EP10009840.9A Active EP2299578B1 (en) 2009-09-17 2010-09-17 Dc/dc converter having a fast and accurate average current limit
EP11000951.1A Active EP2317634B1 (en) 2009-09-17 2010-09-17 Dc/dc converter having a fast and accurate average current limit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11000952.9A Active EP2323246B1 (en) 2009-09-17 2010-09-17 Dc/dc converter having a fast and accurate average current limit

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11000951.1A Active EP2317634B1 (en) 2009-09-17 2010-09-17 Dc/dc converter having a fast and accurate average current limit

Country Status (2)

Country Link
US (1) US8421432B2 (en)
EP (3) EP2323246B1 (en)

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CN101917120B (en) * 2010-07-22 2012-10-03 魏其萃 Device for controlling high precision peak inductive current of switch power supply
CN102377342B (en) * 2011-08-12 2015-08-26 成都芯源系统有限公司 Control circuit and control method for DC-DC conversion circuit
US9712046B2 (en) 2011-09-12 2017-07-18 Infineon Technologies Ag Dead-time optimization of DC-DC converters
ITTO20110893A1 (en) * 2011-10-06 2013-04-07 Alenia Aeronautica Spa SYSTEM AND METHOD OF AUTOMATIC MANAGEMENT OF ELECTRIC POWER FOR AERONAUTICAL APPLICATIONS
EP2777140A2 (en) 2011-11-07 2014-09-17 Ams Ag Circuit for converting dc voltage with current limitation
US9024610B2 (en) 2012-05-01 2015-05-05 Intersil Americas LLC System and method of balanced slope compensation for switch mode regulators
US20140084884A1 (en) * 2012-07-06 2014-03-27 Jong J. Lee Lc switching regulators
JP5482840B2 (en) * 2012-07-23 2014-05-07 ダイキン工業株式会社 Power supply
US8878509B2 (en) * 2012-08-17 2014-11-04 St-Ericsson Sa Current-mode controller for step-down (buck) converter
US9270171B2 (en) * 2012-08-22 2016-02-23 Allegro Microsystems, Llc Methods and apparatus for DC-DC converter having dithered slope compensation
US9024600B2 (en) * 2012-10-10 2015-05-05 Texas Instruments Incorporated PWM control apparatus for average output current balancing in multi-stage DC-DC converters
TWI470918B (en) * 2012-12-17 2015-01-21 Upi Semiconductor Corp Dc-dc converter, time generating circuit, and operating method thereof
CN103280973B (en) * 2013-06-27 2015-07-29 电子科技大学 A kind of Switching Power Supply of Controlled in Current Mode and Based
CN103312200B (en) * 2013-06-28 2016-08-10 成都芯源系统有限公司 Power converter, current limiting unit, control circuit and related control method
US8975826B1 (en) 2013-11-19 2015-03-10 Terralux, Inc. Output regulation with dynamic digital control loop compensation
US9209689B2 (en) 2013-11-19 2015-12-08 Terralux, Inc. Output regulation with nonlinear digital control loop compensation
KR102116148B1 (en) * 2014-04-15 2020-06-08 매그나칩 반도체 유한회사 Switch control circuit and converter using the same
KR102169381B1 (en) 2014-04-17 2020-10-23 삼성전자주식회사 Dc-dc converter and electronic system comprising the same
KR101637650B1 (en) * 2014-05-20 2016-07-20 엘지이노텍 주식회사 Dc-dc converter
CN104201883B (en) * 2014-07-02 2017-02-15 成都芯源系统有限公司 Control circuit for switching converter
US9431900B2 (en) 2015-02-03 2016-08-30 Astec International Limited Dynamic operating frequency control of a buck power converter having a variable voltage output
US9450478B1 (en) 2015-04-10 2016-09-20 Power Integrations, Inc. Load responsive jitter
US9780662B1 (en) * 2015-05-15 2017-10-03 Maxim Integrated Products, Inc. Method for portable sensor-less DC-DC converter control loops
ITUB20151055A1 (en) * 2015-05-27 2016-11-27 St Microelectronics Srl DEVICE AND METHOD FOR CONTROL OF A VOLTAGE CONVERTER AND RELATIVE VOLTAGE CONVERTER
US9698691B2 (en) * 2015-06-04 2017-07-04 Dialog Semiconductor (Uk) Limited Circuit and method for maximum duty cycle limitation in switching converters
JP6423114B2 (en) * 2015-06-29 2018-11-14 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Estimating average inductor current for switch-mode power converters.
US10630175B2 (en) * 2016-08-03 2020-04-21 Texas Instruments Incorporated Pseudo current tracking for power supply regulation
CN109997302B (en) 2017-02-09 2021-09-17 密克罗奇普技术公司 Circuit and method for controlling a switched mode power supply
US9941795B1 (en) 2017-04-19 2018-04-10 Dialog Semiconductor (Uk) Limited Circuits and method for extracting average load current in DC-DC switching converters
US10581241B2 (en) * 2017-06-22 2020-03-03 Silicon Laboratories Inc. Clamping inductive flyback voltage to reduce power dissipation
US10566904B2 (en) * 2017-10-16 2020-02-18 Texas Instruments Incorporated Multimode PWM converter with smooth mode transition
EP3480933B1 (en) * 2017-11-01 2021-03-03 Goodix Technology (HK) Company Limited A circuit for a switched mode power supply
US11031867B2 (en) * 2017-12-08 2021-06-08 Cirrus Logic, Inc. Digital-to-analog converter with embedded minimal error adaptive slope compensation for digital peak current controlled switched mode power supply
CN109002077B (en) * 2018-08-17 2020-07-10 电子科技大学 Transient enhancement circuit
US10811952B2 (en) 2018-09-05 2020-10-20 Cypress Semiconductor Corporation Systems, methods, and devices for fast wakeup of DC-DC converters including feedback regulation loops
US10587196B1 (en) * 2019-02-22 2020-03-10 Elite Semiconductor Memory Technology Inc. Constant on-time controller and buck regulator device using the same
CN112019045B (en) * 2019-05-29 2021-09-21 晶豪科技股份有限公司 Fixed open-time controller and buck converter device using the same
CN110581639B (en) * 2019-09-04 2020-09-15 广州金升阳科技有限公司 Current type buck converter light and heavy load mode switching fast response method and circuit
US10833661B1 (en) * 2019-12-04 2020-11-10 Alpha And Omega Semiconductor (Cayman) Ltd. Slope compensation for peak current mode control modulator
US11424672B2 (en) 2020-01-27 2022-08-23 Qualcomm Incorporated Current limiting for a boost converter
CN111431405B (en) * 2020-04-13 2021-05-14 矽力杰半导体技术(杭州)有限公司 Voltage ripple control circuit and control method
US11973424B2 (en) 2020-09-08 2024-04-30 Analog Devices International Unlimited Company Spur free switching regulator with self-adaptive cancellation of coil current ripple
US11742741B2 (en) 2020-09-08 2023-08-29 Analog Devices International Unlimited Company Spurious noise reduction by monotonic frequency stepping with compensation of error amplifier's output in peak current mode switching regulator
CN112072938B (en) * 2020-09-14 2022-03-08 昂宝电子（上海）有限公司 Apparatus and method for improving output voltage load regulation rate of switching power supply
CN112953224B (en) * 2021-03-26 2022-07-22 广州视琨电子科技有限公司 DC-DC conversion circuit and power supply
CN113922668B (en) * 2021-09-07 2024-01-16 西安理工大学 Single-event transient strengthening circuit and method applied to DC-DC converter
CN113872430B (en) * 2021-09-13 2023-07-18 珠海格力电器股份有限公司 Power factor correction circuit, current zero-crossing distortion suppression method thereof and air conditioner
TWI817533B (en) * 2021-11-12 2023-10-01 美商達爾科技股份有限公司 Switched mode power supply (smps) and related controller and method
KR20240044559A (en) * 2022-09-28 2024-04-05 삼성디스플레이 주식회사 Power voltage generator and display device having the same

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US7145317B1 (en) * 2004-12-13 2006-12-05 Intersil Americas Inc. Constant frequency duty cycle independent synthetic ripple regulator
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US6057675A (en) * 1998-05-11 2000-05-02 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho DC/DC converter
US20070018624A1 (en) * 2005-07-22 2007-01-25 Yigang Guo Current mode control with feed-forward for power devices
US20070296389A1 (en) * 2006-06-23 2007-12-27 Mediatek Inc. Switching regulators

Also Published As

Publication number Publication date
EP2323246A2 (en) 2011-05-18
US20110062932A1 (en) 2011-03-17
EP2299578B1 (en) 2013-07-31
EP2299578A2 (en) 2011-03-23
EP2323246A3 (en) 2011-06-01
US8421432B2 (en) 2013-04-16
EP2317634A2 (en) 2011-05-04
EP2317634B1 (en) 2017-06-21
EP2323246B1 (en) 2014-12-24
EP2317634A3 (en) 2011-05-25

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